An outswinging corner by Cedric picks out Holding near the penalty spot, but the Arsenal defender gets under the header and sends it spiralling high over the crossbar.
90' +1
Mitoma steals the ball and Brighton break forward, with a low throughball from Gross then almost finding Welbeck before Hein claims the ball low down at the forward's feet.
89'
It's all Arsenal now, as their first-team stars start to impose themselves. However, surely it's too late for a miraculous comeback, and Brighton seem set for a place in the fourth round draw.
87'
A sweeping crossfield ball by Zinchenko is effortlessly controlled by Nelson on the right, and the winger progresses to the edge of the box before lashing a shot past the post. Steele was not too concerned, though, and another half-chance is spurned by Arsenal.
84'
Arsenal flood forward again, and Jesus wins a free-kick around 30 yards from goal. From the set-piece - delivered towards the penalty spot - Holding's downward header lacks power and Steele makes a simple save.
80'
G. Xhaka enters the game and replaces A. Sambi Lokonga.
Having been unsuccessful with several attempts at goal today, Sambi Lokonga is now replaced. The more experienced Xhaka is thrown on by Arteta.
79'
D. Undav enters the game and replaces J. Sarmiento.
After making a big impression early on, Sarmiento's influence has faded. He is replaced by Undav for the final few minutes.
78'
Gilmour makes a late intervention to keep Arsenal at bay, and concedes a corner. The Gunners are clearly determined to save this game, but the clock is ticking down towards the 90th minute.
76'
P. Estupiñán enters the game and replaces J. Enciso.
De Zerbi calls upon more defensive cover: Enciso is replaced by a full-back, Estupinan.
Minute
Description
73'
Brighton escape, as several players scrap for the ball inside the visitors' box following an Arsenal corner, before they finally clear their lines.
72'
Gabriel Jesus enters the game and replaces Fábio Vieira.
O. Zinchenko enters the game and replaces K. Tierney.
An attacking switch sees Vieira substituted; Jesus comes on in his place.
Arsenal make a change on the left, as Tierney makes way for Zinchenko.
71'
T. Lamptey has scored a goal for Brighton & Hove Albion! Assist by B. Gilmour.
3-1 BRIGHTON! A lightning break by Brighton opens up a two-goal lead at the Emirates! Gilmour slips through a tidy low ball for Lamptey to latch onto on the left side of the area, then the wing-back strides through to the six-yard box and slides the ball past Hein and into the back of the net! Are the Seagulls flying into the fourth round?
Releasing the ball at just the right time, Gilmour picks out Lamptey's run with a precise low pass.
67'
The shift from Arsenal dominance to Brighton control is complete. Having soaked up plenty of pressure for half-an-hour either side of the interval, De Zerbi's men are playing some neat football just inside their hosts' half.
65'
Following a sustained spell of Arsenal pressure from almost the very start of the second half, Brighton's second goal has changed everything. The home side have lost all momentum and their subs are taking time to settle in. This suits the Seagulls perfectly.
63'
Gabriel Magalhães enters the game and replaces W. Saliba.
Arteta also decides to take off World Cup-bound Saliba; Gabriel - not selected by Brazil - is brought on.
62'
Gabriel Martinelli enters the game and replaces Marquinhos.
One Brazilian forward makes way for another, as Marquinhos is replaced by Martinelli.
60'
A. Webster enters the game and replaces L. Dunk.
Brighton make their third substitution: skipper Dunk is replaced by Webster at the back.
58'
K. Mitoma has scored a goal for Brighton & Hove Albion! Assist by J. Sarmiento.
BRIGHTON LEAD! After Sarmiento finds Mitoma deep inside the Arsenal half, the latter steps into some space and unleashes an accurate strike past Hein and into the bottom-right corner. A fine finish from the half-time substitute, and Brighton go 2-1 ahead against the run of play!
Picking out the clever movement of Mitoma outside the Arsenal box, Sarmiento lays on the pass for Brighton's second goal.
53'
Arsenal relentlessly pound the Brighton goal, as Sambi Lokonga's latest shot sweeps past the left-hand post. Somehow, the Gunners are still level with their outgunned visitors.
52'
Deep inside his own area, Dunk makes a brilliant last-ditch block to deny Marquinhos, and Brighton escape again!
50'
Following an Arsenal corner, Sambi Lokonga has a shot blocked then fires off-target. Arsenal are totally on top now!
47'
Half-time sub Mitoma strides through the left side of Arsenal's defence, and almost picks out Lamptey's outstretched boot inside the six-yard box; Hein stoops down to collect the ball.
Sambi Lokonga fires narrowly wide of the post with a shot from outside the area, as a bright start to the second half continues.
46'
K. Mitoma enters the game and replaces S. March.
P. Groß enters the game and replaces M. Caicedo.
Brighton kick off, and we are back under way at the Emirates Stadium!
Mitoma comes on too, and March will not feature in the second half.
De Zerbi has opted to make a double change at half-time. First, the yellow-carded Caicedo makes way for Gross.
45' +3
HALF-TIME: ARSENAL 1-1 BRIGHTON
44'
Tierney and Marquinhos both see shots blocked by the disciplined Brighton back three, as Arsenal flood forward in search of their second goal before the break.
43'
J. Sarmiento gets yellow.
For catching Vieira on the knee, out on the right flank, Sarmiento concedes a free-kick and is also booked.
40'
Brighton are soaking up ever more pressure, and their early enterprise has had to make way for a more cautious approach.
38'
We are locked at 1-1 heading towards the halfway point, and today's tie will go straight to penalties in the event of a draw after 90 minutes.
36'
Nelson is involved again, as he sees a shot from outside the box blocked before it can trouble Steele in the Brighton goal.
34'
Arsenal are increasingly on top, as Nelson and Nketiah both threaten the Brighton goal from the edge of the area. Nonetheless, the visitors stay resolute and ride out the storm.
32'
The game is brought to a temporary halt, as Vieira nurses an apparent knee injury down on the turf. He will require some medical attention.
28'
Nketiah takes a pop from the right side of the area, but his shot slips by the left-hand post with Steele left untroubled.
27'
Penalty goal scored by D. Welbeck for Brighton & Hove Albion!
BRIGHTON BACK LEVEL! Having won the penalty himself, Welbeck converts it by guiding his spot-kick into the bottom-right corner, past the luckless Hein. That levels it up at 1-1!
26'
K. Hein gets yellow.
On his club debut, Hein receives a booking and concedes a penalty after slipping and then bringing down Welbeck in the area.
25'
Mohamed Elneny gets yellow.
For a foul on Lamptey in midfield, Elneny becomes the second player booked.
24'
Marquinhos breaks forward at speed, but slightly overruns the ball near the box as he looks to cut inside and pull the trigger, and the chance is lost.
22'
With momentum on their side since the goal, Arsenal are probing around the Brighton area in search of creating a second - quite a change from the opening stages.
20'
E. Nketiah has scored a goal for Arsenal! Assist by R. Nelson.
Using his turn of pace, Nelson beats two Brighton defenders to set up Nketiah's opening goal.
ARSENAL LEAD! The Gunners go 1-0 up! After Nelson blitzes the Brighton defence, cup specialist Nketiah stays cool to score his 11th goal in 12 EFL Cup games; planting a delightful strike from the left side of the area into the bottom-right corner!
17'
Brighton throw bodies forward again, and this time Enciso shoots from outside the box. However, his effort is also destined to sail over Hein's crossbar. It's been a lively start from the visitors so far.
16'
Nelson plays in Vieira, who finds a little space inside the area, but the Portuguese midfielder struggles to fire in an accurate shot after his team-mate's misplaced pass.
10'
An outswinging cross is headed partly away by Veltman, but when Tierney returns the ball into the box, Steele claims it quite comfortably.
8'
M. Caicedo gets yellow.
For pulling back Vieira by the shirt, the combative Caicedo is shown the game's first yellow card.
3'
Brighton take the first shot on goal, as Sarmiento breaks through before playing in Enciso, whose effort is deflected wide for a corner by Holding.
1'
We are under way in North London!
Hello and welcome to live coverage of today's EFL Cup third round tie between Arsenal and Brighton at the Emirates Stadium!
Entering at this stage of the competition due to their Europa League participation, Arsenal have endured a three-decade drought in the EFL Cup. In fact, the Gunners have only lifted the trophy twice in their history - most recently in 1993. Mikel Arteta's men made it to the semi-finals last year, but were eliminated by eventual winners Liverpool. Following Sunday's win over London rivals Chelsea, today's hosts have posted three straight wins without conceding a goal and hold a two-point lead over Manchester City at the top of the Premier League table.
After beating Wolves last weekend, Brighton are sixth in the Premier League standings after 13 matches, and they now continue their quest for a first ever League Cup. The Seagulls have already defeated League One strugglers Forest Green Rovers 3-0 to make it this far, and are aiming to secure a fourth-round appearance today - they have been knocked out at that stage in both of the past two seasons. Set to face in-form hosts today, Brighton have conceded at least twice in each of their last five away matches.
ARSENAL (4-2-3-1): Karl Hein; Cedric Soares, William Saliba, Rob Holding, Kieran Tierney; Albert Sambi Lokonga, Mohamed Elneny; Reiss Nelson, Fabio Vieira, Eddie Nketiah; Marquinhos.
SUBS: Matt Turner, Thomas Partey, Martin Odegaard, Ben White, Gabriel Jesus, Oleksandr Zinchenko, Gabriel Magalhaaes, Gabriel Martinelli, Granit Xhaka.
BRIGHTON (3-4-1-2): Jason Steele; Joel Veltman, Lewis Dunk, Levi Colwill; Tariq Lamptey, Billy Gilmour, Moises Caicedo, Solly March; Jeremy Sarmiento; Julio Enciso, Danny Welbeck.
SUBS: Robert Sanchez, Ed Turns, Deniz Undav, Andrew Moran, Pascal Gross, Adam Webster, Kaoru Mitoma, Evan Ferguson, Pervis Estupinan.
After silence falls around the Emirates Stadium, to observe 'The Last Post' ahead of Remembrance Day later this week, the players take up their positions and kick-off is now just moments away.
Brighton go into the hat for tomorrow's EFL Cup fourth round draw, then host Aston Villa at the weekend. Meanwhile, Arsenal must attempt to get back to winning ways as a no-doubt more familiar XI face Wolves in their final fixture before the World Cup.
That's all from the Emirates Stadium today, so thank you for joining us and goodbye!
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